MDS 9124 cannot learn one of the WWN of the UCS a blade server

[xiazhen01]

Hi, everyone,g   

could you help me, introduce  testing evrionment , 

   A SAN switch is MDS 9124.

   A  UCS Mini 6314 

   A  EMC VNX 5100 

  on the MDS, cannot found out one of WWN of the blade server ? because of when initialization  UCS profile, a blade server assigin two HBA port WWN.

   please refer  attachement dmage , 

[Walter Dey]

Can you please provide the following information:

- topology: e.g.

do you have one or two MDS ? 

is UCS FI-A connected to MDS ? is UCS FI-B connected to same or another MDS

have you created 2 different VSAN's, eg. 10 for Fabric A, 20 for Fabric B

are your vhba assigned ? vhba-1 to VSAN 10, vhba-2 to vsan 20 ?

[xiazhen01]

hi,Walter Dey

- topology: e.g.

A: 

do you have one or two MDS ?  

A;one MDS

is UCS FI-A connected to MDS ? is UCS FI-B connected to same or another MDS

A: both of FI are connect to same MDS.

have you created 2 different VSAN's, eg. 10 for Fabric A, 20 for Fabric B

A: Only one VSAN.

are your vhba assigned ? vhba-1 to VSAN 10, vhba-2 to vsan 20 ?

A: NO. both Vhba are same VSAN.

[Walter Dey · Accepted solution]

Ok, to have a best practise setup (with one MDS, better of course would be 2), you have to do the following.

On MDS:

- Create 2 VSAN's e.g. 10 (Fabric A) and 20 (Fabric B); with this we simulate a logical separation of 2 fabrics; and don't forget that zoning, flogi,... is done per VSAN.

- select 2 physical FC ports eg. fc 1/1 and fc 1/2, one connecting to UCS Fabric Interconnect A, the other to UCS Fabric Interconnect B; put fc 1/1 in vsan 10, fc 1/2 in vsan 20.

on UCS

Create 2 VSAN's 10 (Fabric A) and 20 (Fabric B);

put the FC port on the Fabric Interconnect A connecting to MDS in VSAN 10, the FC port on the Fabric Interconnect B connecting to MDS in VSAN 20.

Now in the Service profile, you created 2 vhba, one connecting to fabric A resp. B; put the former in VSAN 10, the latter in VSAN 20.

Once done, show us the output of the MDS command: show flogi database 

Forgot one important step: MDS has to be NPIV enabled

[Walter Dey]

The reason why you have this result is: NPIV is most likely not enabled on this MDS (see my entry below)